// 验收测试：改窗口尺寸不得重建播放器，且取景要跟着画布比例走。
//
// 判据是"播放器实例身份"：给加载后的实例打上标记，之后每次改视口都核对
// window.__player 是否还是同一个对象、标记是否还在。重建会换掉实例，
// 标记随之消失——这比数日志可靠得多。
import { withPage, sleep } from "../cdp.mjs";

// 服务地址可用 SIM_BASE 覆盖（默认 8190）。写死端口会在换端口时静默连错地方，
// 表现得像功能坏了，其实只是测错了对象。
const URL = (process.env.SIM_BASE ?? "http://127.0.0.1:8190/") + "?__freeze=1";
const sizes = [
  [1920, 1080],
  [2560, 1440],
  [3440, 1440],
  [1080, 1920],
  [1600, 900],
  [2560, 1600],
  [3840, 2160],
  [1280, 720],
  [1920, 1080],
];
const stress = [];
for (let i = 0; i < 20; i++) stress.push(i % 2 ? [1080, 1920] : [1920, 1080]);

const out = await withPage(
  { width: 1920, height: 1080, extraArgs: ["--enable-precise-memory-info", "--js-flags=--expose-gc"] },
  async ({ send, evaluate, consoleLines, exceptions }) => {
    await send("Page.navigate", { url: URL });
    const deadline = Date.now() + 30000;
    while (Date.now() < deadline) {
      if (await evaluate('!!(window.__test && (window.__test.successAt || window.__test.error))')) break;
      await sleep(150);
    }
    await sleep(600);

    const stamp = await evaluate(`(function(){
      window.__first = window.__player;
      if (window.__player) window.__player.__probe = 'A';
      return { hasPlayer: !!window.__player, error: window.__test ? window.__test.error : null };
    })()`);

    const rows = [];
    const measure = async (w, h, tag) => {
      await send("Emulation.setDeviceMetricsOverride", {
        width: w,
        height: h,
        deviceScaleFactor: 1,
        mobile: false,
      });
      await sleep(420);
      // 先强制回收再读堆，否则量到的是 V8 的延迟回收节奏而不是真实占用
      await evaluate('(typeof gc === "function") ? (gc(), true) : false');
      const r = await evaluate(`(function(){
        var p = window.__player;
        if (!p) return null;
        var v = p.currentViewport;
        return {
          same: p === window.__first,
          probe: p.__probe,
          css: [p.canvas.clientWidth, p.canvas.clientHeight],
          resolved: [ +v.x.toFixed(2), +v.y.toFixed(2), +v.width.toFixed(2), +v.height.toFixed(2) ],
          pad: [v.padLeft, v.padRight, v.padTop, v.padBottom],
          childViews: window.__player.config.viewport.animations ? Object.keys(window.__player.config.viewport.animations).length : -1,
          heap: performance.memory ? performance.memory.usedJSHeapSize : 0,
          drawCalls: window.__test ? window.__test.drawCalls : 0
        };
      })()`);
      rows.push({ tag, w, h, ...(r ?? { same: false, probe: null, css: null, resolved: null, pad: null, heap: 0, drawCalls: 0 }) });
    };

    for (const [w, h] of sizes) await measure(w, h, `${w}x${h}`);
    const heapBeforeStress = rows[rows.length - 1].heap;
    for (const [w, h] of stress) await measure(w, h, `压力 ${w}x${h}`);
    const heapAfterStress = rows[rows.length - 1].heap;

    return { stamp, rows, heapBeforeStress, heapAfterStress, consoleLines, exceptions };
  },
);

const { stamp, rows, heapBeforeStress, heapAfterStress, consoleLines, exceptions } = out;

let failures = 0;
const fail = (msg) => {
  failures++;
  console.log(`  ✗ ${msg}`);
};

console.log(`播放器就绪: ${stamp.hasPlayer ? "是" : "否"}   驱动报错: ${stamp.error ?? "无"}`);
console.log("");
console.log("画布尺寸        实例未重建  内边距      可见矩形                                        比例核对");
for (const r of rows) {
  if (r.tag.startsWith("压力")) continue;
  const a = r.w / r.h;
  const ra = r.resolved ? r.resolved[2] / r.resolved[3] : NaN;
  const ratioOk = Math.abs(ra - a) < 0.002;
  const padOk = r.pad && r.pad.every((p) => p === 0);
  const rect = r.resolved ? r.resolved.map((n) => String(n).padStart(9)).join(" ") : "—";
  console.log(
    `${r.tag.padEnd(14)}  ${String(r.same).padEnd(10)}  ${(padOk ? "全 0 ✓" : JSON.stringify(r.pad)).padEnd(10)}  ${rect}  ${ratioOk ? "✓" : `✗ 期望 ${a.toFixed(4)} 实得 ${ra.toFixed(4)}`}`,
  );
  if (!r.same) fail(`${r.tag} 重建了播放器（标记丢失: ${r.probe}）`);
  if (!padOk) fail(`${r.tag} 内边距没有归零`);
  if (!ratioOk) fail(`${r.tag} 可见矩形比例与画布不符`);
}

// 首尾同为 1920x1080：取景必须回到完全相同的值，证明重算可逆、无漂移
const first = rows.find((r) => r.tag === "1920x1080");
const last = [...rows].reverse().find((r) => r.tag === "1920x1080");
const reversible = first.resolved.every((n, i) => Math.abs(n - last.resolved[i]) < 0.01);
if (!reversible) fail(`回到 16:9 后取景漂移：${first.resolved} → ${last.resolved}`);
console.log(`\n回到 16:9 取景可逆: ${reversible ? "✓" : "✗"}  ${first.resolved} → ${last.resolved}`);

const growth = heapAfterStress - heapBeforeStress;
console.log(`连续 20 次 resize 堆内存: ${(heapBeforeStress / 1048576).toFixed(1)} MB → ${(heapAfterStress / 1048576).toFixed(1)} MB（增长 ${(growth / 1048576).toFixed(2)} MB）`);
if (growth > 4 * 1048576) fail(`连续 resize 内存增长过大：${(growth / 1048576).toFixed(2)} MB`);

const drawCalls = rows[rows.length - 1].drawCalls;
console.log(`累计绘制帧数: ${drawCalls}`);
if (!(drawCalls > 0)) fail("没有绘制任何帧");

const noisy = consoleLines.filter((l) => /error|warn|uncaught|fail/i.test(l));
console.log(`控制台异常: ${noisy.length ? noisy.slice(0, 5).join(" | ") : "无 ✓"}`);
if (noisy.length) fail("控制台有报错/警告");
console.log(`未捕获异常: ${exceptions.length ? exceptions.slice(0, 4).join(" | ") : "无 ✓"}`);
if (exceptions.length) fail("有未捕获异常");

console.log(`\n结论：${failures === 0 ? "全部通过 ✓" : `${failures} 项失败 ✗`}`);
process.exit(failures === 0 ? 0 : 1);